Cock, valve, and the like



.May 2l, 1929..

cocx, VALVE, AND THE LIKE Filed Dec. 25,' 1927 cocks and valves that areused after described Patented MayZl, 1929;-` UNITED STATES EDGAB11,114,314 PATENT OFFICE.

HOLGERHANS JRGENSEN', 0F ELSINORE, IIJEIN'MARK.

cocx, VALVE, AND 'rms LIxE.

appiicmon mea ammini as, i921,

The invention relates to improvements in locks designed primarily forvalves ot' the plus' type-- The principal object of the invention is toprovide a new and improved connection between the stem of the valve plugand a removable key for turning said stem, the construction being suchthat the key cannot accidentally fall from the lock whether the latterbe open or closed. y

Another object is to provide a special stopping device to prevent theremoyal o-the key from the lock when the cock or valve is 'open and onlywhen the cock` or valve is closed is it possible to remove the key fromthe lock.

This arrangemen I practical 'in for iniiamand the like is very mableliquids, p as it comp etely closed when-the key is remov fromthe locSimultaneousl the cock or valve is locked. and can only be opened bymeans of the key particularly belonging to it.

With the foregoing in view, resides in the novel subject matterhereinand claimed, the #descripisonous gases tion being supplemented bythe accompanying drawing. y y

Fig. 1 is 'a vertical sectional view through a cock housing and the lockmechanism, parallel with the boring of the cock housing,

Fig. 2 shows a vertical section at right angles to Fig. 1,

Fig. 3 shows the above,

Fig. 4 is a sectional view Fig. 2, and

Fig. 5 is a view similar to a Fig. 1 showing a diierent form o tion. n

In the drawing above brifly described, the numeral 1 designates theusual cock housing formed with a branch 2 at its top. A sleeve 3 issecured to the branch 2 by any This sleeve i), forms a guide for the key4 and covers the stem oi the cock lug` 5. This stem of the cock plug 5has a cylindrical part 6 one side of which has a iiat lock and cock seenfrom on line A-A of portion of construcsurface 7 a cylindrical neck 8 ofa somewhat 9 of the same diameter as the G an annular tum- Serlal No.242,191, and

'ves a security that the cock or valve bel ed 17 is above the theinvention .3 there' in Denmark January 17, 1927. bler 11'the inner sideof which has a straight edge 12 that fits the stem 6by which the tumbleris forced to accom any the rotation of the cock plug 5. On t e outerside of the tumbler 11 are projections 13 that engage notches 14 in theinner end of the sleeve 3 for stopping'the tumbler. This tumbler 11 isheld in engagement by means of a compression pring 16 and thus the cockplug 5 is locke The key 4 has a bore that fits the neck of the cock plug5, and within the -key 4 there is a segment-sliaped bit 17 that iits theflat surfaces 7 and 10, allowing the cock plug 5 to be turned by meansof the key 4. Wh key 4 is inserted .in the lock the bit 17 is pusheddown along the flat surface 10 of the stem to the neck 8 which issmaller in diameter than the parts key 4 can be turned around the neckuntil the bit Hat surface 7, whereuponv the key may be pushed down tothe tumbler 11. By overcoming the action of the spring 16 the key isused to-push the tumbler 11 out of engagement with the notches 14 afterwhich the cock i key`4. Because of the shape 'of the cock plug stem thelock can practically only be opened with the key particularly fittedto-said stem.l Furthermore, the key cannot be pushed quite out of thelock by the action of the spring 16 when the tumbler is pushed intoengagement, -nor can said key accidentally fall from the lock as it mustiirst be turned a half revolution around the neck 8 of the cock plug,before it can be removed from the lock.

On the handle 18 of the key 4 there is a pin 19 which underlies anarcuate iange 20 on the sleeve 3 when the key is pressed down and turnedto open the cock plug 5 whereby the removal of the key is prevented whenthe cock is open. When -the key is turned back so that the cock isclosed, the spring 1G will automatically push the tumbler 11 intoengagement and lock the cock while the key is simultaneously pushed acorresponding distance out of the lock, at which time its handle 18abuts the can thus not cause any rotation ofthe cock plug, and as afurther precaution the key may be removed from the lock.

o prevent the lifting of the cock plug 5 when removing the key whichwould otherwise cause .the lock to leak, the housing may 5 can be turnedby ends of the iiange 20. r Chance blows against the handle of the keyvllO 2 1,714,374 be pD ovid said tumbler and said sleeve for holding lWithin the branch 2.

said tumbler cock plug 5.

` As excellent results are obtainable from details disclosed, they arepreferably followed. owever, Within the scope of the invention asclaimed, variations may be made.

.I claim:

in operative position, and a pin on said handle capable of lymgagamstthe mner side of said flange when sald key 1s forced 1nnec wardly torelease said tumbler and then flat longitudinal surfaces arranged out oftlll'nedainement with eachother, a. spring-applied In 'Qsfmfmy whereof Ihave hereunto tumbler around said stem slidable but n0nmxid "WSignaturerotatable thereon, inter-engaging means on EDGAR HOLGER HANSJRGENSEN

